1 /* eth16i.c An ICL EtherTeam 16i and 32 EISA ethernet driver for Linux
3 Written 1994-1999 by Mika Kuoppala
5 Copyright (C) 1994-1999 by Mika Kuoppala
6 Based on skeleton.c and heavily on at1700.c by Donald Becker
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
11 The author may be reached as miku@iki.fi
13 This driver supports following cards :
15 - ICL EtherTeam 32 EISA
16 (Uses true 32 bit transfers rather than 16i compatibility mode)
19 insmod eth16i.o io=0x2a0 mediatype=bnc
21 mediatype can be one of the following: bnc,tp,dix,auto,eprom
23 'auto' will try to autoprobe mediatype.
24 'eprom' will use whatever type defined in eprom.
26 I have benchmarked driver with PII/300Mhz as a ftp client
27 and 486/33Mhz as a ftp server. Top speed was 1128.37 kilobytes/sec.
30 - skeleton.c a sample network driver core for linux,
31 written by Donald Becker <becker@scyld.com>
32 - at1700.c a driver for Allied Telesis AT1700, written
34 - e16iSRV.asm a Netware 3.X Server Driver for ICL EtherTeam16i
35 written by Markku Viima
36 - The Fujitsu MB86965 databook.
38 Author thanks following persons due to their valueble assistance:
42 Kurt Huwig <kurt@huwig.de>
46 Version Date Description
48 0.01 15.12-94 Initial version (card detection)
49 0.02 23.01-95 Interrupt is now hooked correctly
50 0.03 01.02-95 Rewrote initialization part
51 0.04 07.02-95 Base skeleton done...
52 Made a few changes to signature checking
53 to make it a bit reliable.
54 - fixed bug in tx_buf mapping
55 - fixed bug in initialization (DLC_EN
56 wasn't enabled when initialization
58 0.05 08.02-95 If there were more than one packet to send,
59 transmit was jammed due to invalid
60 register write...now fixed
61 0.06 19.02-95 Rewrote interrupt handling
62 0.07 13.04-95 Wrote EEPROM read routines
63 Card configuration now set according to
65 0.08 23.06-95 Wrote part that tries to probe used interface
66 port if AUTO is selected
68 0.09 01.09-95 Added module support
70 0.10 04.09-95 Fixed receive packet allocation to work
73 0.20 20.09-95 Added support for EtherTeam32 EISA
75 0.21 17.10-95 Removed the unnecessary extern
76 init_etherdev() declaration. Some
79 0.22 22.02-96 Receive buffer was not flushed
80 correctly when faulty packet was
83 0.23 26.02-96 Made resetting the adapter
86 0.24 27.02-96 Rewrote faulty packet handling in eth16i_rx
88 0.25 22.05-96 kfree() was missing from cleanup_module.
90 0.26 11.06-96 Sometimes card was not found by
91 check_signature(). Now made more reliable.
93 0.27 23.06-96 Oops. 16 consecutive collisions halted
94 adapter. Now will try to retransmit
95 MAX_COL_16 times before finally giving up.
97 0.28 28.10-97 Added dev_id parameter (NULL) for free_irq
99 0.29 29.10-97 Multiple card support for module users
101 0.30 30.10-97 Fixed irq allocation bug.
102 (request_irq moved from probe to open)
104 0.30a 21.08-98 Card detection made more relaxed. Driver
105 had problems with some TCP/IP-PROM boots
106 to find the card. Suggested by
107 Kurt Huwig <kurt@huwig.de>
109 0.31 28.08-98 Media interface port can now be selected
110 with module parameters or kernel
113 0.32 31.08-98 IRQ was never freed if open/close
114 pair wasn't called. Now fixed.
116 0.33 10.09-98 When eth16i_open() was called after
117 eth16i_close() chip never recovered.
118 Now more shallow reset is made on
121 0.34 29.06-99 Fixed one bad #ifdef.
122 Changed ioaddr -> io for consistency
124 0.35 01.07-99 transmit,-receive bytes were never
128 In some cases the media interface autoprobing code doesn't find
129 the correct interface type. In this case you can
130 manually choose the interface type in DOS with E16IC.EXE which is
131 configuration software for EtherTeam16i and EtherTeam32 cards.
132 This is also true for IRQ setting. You cannot use module
133 parameter to configure IRQ of the card (yet).
136 - Real multicast support
137 - Rewrite the media interface autoprobing code. Its _horrible_ !
138 - Possibly merge all the MB86965 specific code to external
139 module for use by eth16.c and Donald's at1700.c
140 - IRQ configuration with module parameter. I will do
141 this when i will get enough info about setting
142 irq without configuration utility.
145 static char *version =
146 "eth16i.c: v0.35 01-Jul-1999 Mika Kuoppala (miku@iki.fi)\n";
148 #include <linux/module.h>
149 #include <linux/kernel.h>
150 #include <linux/types.h>
151 #include <linux/fcntl.h>
152 #include <linux/interrupt.h>
153 #include <linux/ioport.h>
154 #include <linux/in.h>
155 #include <linux/string.h>
156 #include <linux/errno.h>
157 #include <linux/init.h>
158 #include <linux/spinlock.h>
159 #include <linux/netdevice.h>
160 #include <linux/etherdevice.h>
161 #include <linux/skbuff.h>
162 #include <linux/bitops.h>
163 #include <linux/jiffies.h>
164 #include <linux/io.h>
166 #include <asm/system.h>
172 #define BITSET(ioaddr, bnum) ((outb(((inb(ioaddr)) | (bnum)), ioaddr)))
173 #define BITCLR(ioaddr, bnum) ((outb(((inb(ioaddr)) & (~(bnum))), ioaddr)))
175 /* This is the I/O address space for Etherteam 16i adapter. */
176 #define ETH16I_IO_EXTENT 32
178 /* Ticks before deciding that transmit has timed out */
179 #define TX_TIMEOUT (400*HZ/1000)
181 /* Maximum loop count when receiving packets */
182 #define MAX_RX_LOOP 20
184 /* Some interrupt masks */
185 #define ETH16I_INTR_ON 0xef8a /* Higher is receive mask */
186 #define ETH16I_INTR_OFF 0x0000
188 /* Buffers header status byte meanings */
189 #define PKT_GOOD BIT(5)
190 #define PKT_GOOD_RMT BIT(4)
191 #define PKT_SHORT BIT(3)
192 #define PKT_ALIGN_ERR BIT(2)
193 #define PKT_CRC_ERR BIT(1)
194 #define PKT_RX_BUF_OVERFLOW BIT(0)
196 /* Transmit status register (DLCR0) */
197 #define TX_STATUS_REG 0
198 #define TX_DONE BIT(7)
199 #define NET_BUSY BIT(6)
200 #define TX_PKT_RCD BIT(5)
201 #define CR_LOST BIT(4)
202 #define TX_JABBER_ERR BIT(3)
203 #define COLLISION BIT(2)
204 #define COLLISIONS_16 BIT(1)
206 /* Receive status register (DLCR1) */
207 #define RX_STATUS_REG 1
208 #define RX_PKT BIT(7) /* Packet received */
209 #define BUS_RD_ERR BIT(6)
210 #define SHORT_PKT_ERR BIT(3)
211 #define ALIGN_ERR BIT(2)
212 #define CRC_ERR BIT(1)
213 #define RX_BUF_OVERFLOW BIT(0)
215 /* Transmit Interrupt Enable Register (DLCR2) */
216 #define TX_INTR_REG 2
217 #define TX_INTR_DONE BIT(7)
218 #define TX_INTR_COL BIT(2)
219 #define TX_INTR_16_COL BIT(1)
221 /* Receive Interrupt Enable Register (DLCR3) */
222 #define RX_INTR_REG 3
223 #define RX_INTR_RECEIVE BIT(7)
224 #define RX_INTR_SHORT_PKT BIT(3)
225 #define RX_INTR_CRC_ERR BIT(1)
226 #define RX_INTR_BUF_OVERFLOW BIT(0)
228 /* Transmit Mode Register (DLCR4) */
229 #define TRANSMIT_MODE_REG 4
230 #define LOOPBACK_CONTROL BIT(1)
231 #define CONTROL_OUTPUT BIT(2)
233 /* Receive Mode Register (DLCR5) */
234 #define RECEIVE_MODE_REG 5
235 #define RX_BUFFER_EMPTY BIT(6)
236 #define ACCEPT_BAD_PACKETS BIT(5)
237 #define RECEIVE_SHORT_ADDR BIT(4)
238 #define ACCEPT_SHORT_PACKETS BIT(3)
239 #define REMOTE_RESET BIT(2)
241 #define ADDRESS_FILTER_MODE BIT(1) | BIT(0)
244 #define MODE_1 1 /* NODE ID, BC, MC, 2-24th bit */
245 #define MODE_2 2 /* NODE ID, BC, MC, Hash Table */
247 /* Configuration Register 0 (DLCR6) */
248 #define CONFIG_REG_0 6
249 #define DLC_EN BIT(7)
250 #define SRAM_CYCLE_TIME_100NS BIT(6)
251 #define SYSTEM_BUS_WIDTH_8 BIT(5) /* 1 = 8bit, 0 = 16bit */
252 #define BUFFER_WIDTH_8 BIT(4) /* 1 = 8bit, 0 = 16bit */
255 #define SRAM_BS1 BIT(1) /* 00=8kb, 01=16kb */
256 #define SRAM_BS0 BIT(0) /* 10=32kb, 11=64kb */
258 #ifndef ETH16I_TX_BUF_SIZE /* 0 = 2kb, 1 = 4kb */
259 #define ETH16I_TX_BUF_SIZE 3 /* 2 = 8kb, 3 = 16kb */
261 #define TX_BUF_1x2048 0
262 #define TX_BUF_2x2048 1
263 #define TX_BUF_2x4098 2
264 #define TX_BUF_2x8192 3
266 /* Configuration Register 1 (DLCR7) */
267 #define CONFIG_REG_1 7
268 #define POWERUP BIT(5)
270 /* Transmit start register */
271 #define TRANSMIT_START_REG 10
272 #define TRANSMIT_START_RB 2
273 #define TX_START BIT(7) /* Rest of register bit indicate*/
274 /* number of packets in tx buffer*/
275 /* Node ID registers (DLCR8-13) */
279 /* Hash Table registers (HT8-15) */
280 #define HASH_TABLE_0 8
281 #define HASH_TABLE_RB 1
283 /* Buffer memory ports */
284 #define BUFFER_MEM_PORT_LB 8
285 #define DATAPORT BUFFER_MEM_PORT_LB
286 #define BUFFER_MEM_PORT_HB 9
288 /* 16 Collision control register (BMPR11) */
289 #define COL_16_REG 11
290 #define HALT_ON_16 0x00
291 #define RETRANS_AND_HALT_ON_16 0x02
293 /* Maximum number of attempts to send after 16 concecutive collisions */
294 #define MAX_COL_16 10
296 /* DMA Burst and Transceiver Mode Register (BMPR13) */
297 #define TRANSCEIVER_MODE_REG 13
298 #define TRANSCEIVER_MODE_RB 2
299 #define IO_BASE_UNLOCK BIT(7)
300 #define LOWER_SQUELCH_TRESH BIT(6)
301 #define LINK_TEST_DISABLE BIT(5)
302 #define AUI_SELECT BIT(4)
303 #define DIS_AUTO_PORT_SEL BIT(3)
305 /* Filter Self Receive Register (BMPR14) */
306 #define FILTER_SELF_RX_REG 14
307 #define SKIP_RX_PACKET BIT(2)
308 #define FILTER_SELF_RECEIVE BIT(0)
310 /* EEPROM Control Register (BMPR 16) */
311 #define EEPROM_CTRL_REG 16
313 /* EEPROM Data Register (BMPR 17) */
314 #define EEPROM_DATA_REG 17
316 /* NMC93CSx6 EEPROM Control Bits */
324 /* NMC93CSx6 EEPROM Instructions */
325 #define EEPROM_READ 0x80
327 /* NMC93CSx6 EEPROM Addresses */
328 #define E_NODEID_0 0x02
329 #define E_NODEID_1 0x03
330 #define E_NODEID_2 0x04
331 #define E_PORT_SELECT 0x14
332 #define E_PORT_BNC 0x00
333 #define E_PORT_DIX 0x01
334 #define E_PORT_TP 0x02
335 #define E_PORT_AUTO 0x03
336 #define E_PORT_FROM_EPROM 0x04
337 #define E_PRODUCT_CFG 0x30
340 /* Macro to slow down io between EEPROM clock transitions */
341 #define eeprom_slow_io() do { int _i = 40; while(--_i > 0) { inb(0x80); }}while(0)
343 /* Jumperless Configuration Register (BMPR19) */
344 #define JUMPERLESS_CONFIG 19
346 /* ID ROM registers, writing to them also resets some parts of chip */
349 #define RESET ID_ROM_0
351 /* This is the I/O address list to be probed when seeking the card */
352 static unsigned int eth16i_portlist[] __initdata = {
353 0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
356 static unsigned int eth32i_portlist[] __initdata = {
357 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x6000, 0x7000, 0x8000,
358 0x9000, 0xA000, 0xB000, 0xC000, 0xD000, 0xE000, 0xF000, 0
361 /* This is the Interrupt lookup table for Eth16i card */
362 static unsigned int eth16i_irqmap[] __initdata = { 9, 10, 5, 15, 0 };
363 #define NUM_OF_ISA_IRQS 4
365 /* This is the Interrupt lookup table for Eth32i card */
366 static unsigned int eth32i_irqmap[] __initdata = { 3, 5, 7, 9, 10, 11, 12, 15, 0 };
367 #define EISA_IRQ_REG 0xc89
368 #define NUM_OF_EISA_IRQS 8
370 static unsigned int eth16i_tx_buf_map[] = { 2048, 2048, 4096, 8192 };
372 /* Use 0 for production, 1 for verification, >2 for debug */
374 #define ETH16I_DEBUG 0
376 static unsigned int eth16i_debug = ETH16I_DEBUG;
378 /* Information for each board */
380 struct eth16i_local {
381 unsigned char tx_started;
382 unsigned char tx_buf_busy;
383 unsigned short tx_queue; /* Number of packets in transmit buffer */
384 unsigned short tx_queue_len;
385 unsigned int tx_buf_size;
386 unsigned long open_time;
387 unsigned long tx_buffered_packets;
388 unsigned long tx_buffered_bytes;
389 unsigned long col_16;
393 /* Function prototypes */
395 static int eth16i_probe1(struct net_device *dev, int ioaddr);
396 static int eth16i_check_signature(int ioaddr);
397 static int eth16i_probe_port(int ioaddr);
398 static void eth16i_set_port(int ioaddr, int porttype);
399 static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l);
400 static int eth16i_receive_probe_packet(int ioaddr);
401 static int eth16i_get_irq(int ioaddr);
402 static int eth16i_read_eeprom(int ioaddr, int offset);
403 static int eth16i_read_eeprom_word(int ioaddr);
404 static void eth16i_eeprom_cmd(int ioaddr, unsigned char command);
405 static int eth16i_open(struct net_device *dev);
406 static int eth16i_close(struct net_device *dev);
407 static netdev_tx_t eth16i_tx(struct sk_buff *skb, struct net_device *dev);
408 static void eth16i_rx(struct net_device *dev);
409 static void eth16i_timeout(struct net_device *dev);
410 static irqreturn_t eth16i_interrupt(int irq, void *dev_id);
411 static void eth16i_reset(struct net_device *dev);
412 static void eth16i_timeout(struct net_device *dev);
413 static void eth16i_skip_packet(struct net_device *dev);
414 static void eth16i_multicast(struct net_device *dev);
415 static void eth16i_select_regbank(unsigned char regbank, int ioaddr);
416 static void eth16i_initialize(struct net_device *dev, int boot);
419 static int eth16i_set_irq(struct net_device *dev);
423 static ushort eth16i_parse_mediatype(const char* s);
426 static char cardname[] __initdata = "ICL EtherTeam 16i/32";
428 static int __init do_eth16i_probe(struct net_device *dev)
432 int base_addr = dev->base_addr;
435 printk(KERN_DEBUG "Probing started for %s\n", cardname);
437 if(base_addr > 0x1ff) /* Check only single location */
438 return eth16i_probe1(dev, base_addr);
439 else if(base_addr != 0) /* Don't probe at all */
442 /* Seek card from the ISA io address space */
443 for(i = 0; (ioaddr = eth16i_portlist[i]) ; i++)
444 if(eth16i_probe1(dev, ioaddr) == 0)
447 /* Seek card from the EISA io address space */
448 for(i = 0; (ioaddr = eth32i_portlist[i]) ; i++)
449 if(eth16i_probe1(dev, ioaddr) == 0)
456 struct net_device * __init eth16i_probe(int unit)
458 struct net_device *dev = alloc_etherdev(sizeof(struct eth16i_local));
462 return ERR_PTR(-ENOMEM);
464 sprintf(dev->name, "eth%d", unit);
465 netdev_boot_setup_check(dev);
467 err = do_eth16i_probe(dev);
477 static const struct net_device_ops eth16i_netdev_ops = {
478 .ndo_open = eth16i_open,
479 .ndo_stop = eth16i_close,
480 .ndo_start_xmit = eth16i_tx,
481 .ndo_set_multicast_list = eth16i_multicast,
482 .ndo_tx_timeout = eth16i_timeout,
483 .ndo_change_mtu = eth_change_mtu,
484 .ndo_set_mac_address = eth_mac_addr,
485 .ndo_validate_addr = eth_validate_addr,
488 static int __init eth16i_probe1(struct net_device *dev, int ioaddr)
490 struct eth16i_local *lp = netdev_priv(dev);
491 static unsigned version_printed;
494 /* Let's grab the region */
495 if (!request_region(ioaddr, ETH16I_IO_EXTENT, cardname))
499 The MB86985 chip has on register which holds information in which
500 io address the chip lies. First read this register and compare
501 it to our current io address and if match then this could
505 if(ioaddr < 0x1000) {
506 if(eth16i_portlist[(inb(ioaddr + JUMPERLESS_CONFIG) & 0x07)]
513 /* Now we will go a bit deeper and try to find the chip's signature */
515 if(eth16i_check_signature(ioaddr) != 0) {
521 Now it seems that we have found a ethernet chip in this particular
522 ioaddr. The MB86985 chip has this feature, that when you read a
523 certain register it will increase it's io base address to next
524 configurable slot. Now when we have found the chip, first thing is
525 to make sure that the chip's ioaddr will hold still here.
528 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
529 outb(0x00, ioaddr + TRANSCEIVER_MODE_REG);
531 outb(0x00, ioaddr + RESET); /* Reset some parts of chip */
532 BITSET(ioaddr + CONFIG_REG_0, BIT(7)); /* Disable the data link */
534 if( (eth16i_debug & version_printed++) == 0)
535 printk(KERN_INFO "%s", version);
537 dev->base_addr = ioaddr;
538 dev->irq = eth16i_get_irq(ioaddr);
540 /* Try to obtain interrupt vector */
542 if ((retval = request_irq(dev->irq, (void *)ð16i_interrupt, 0, cardname, dev))) {
543 printk(KERN_WARNING "%s at %#3x, but is unusable due to conflicting IRQ %d.\n",
544 cardname, ioaddr, dev->irq);
548 printk(KERN_INFO "%s: %s at %#3x, IRQ %d, ",
549 dev->name, cardname, ioaddr, dev->irq);
552 /* Now we will have to lock the chip's io address */
553 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
554 outb(0x38, ioaddr + TRANSCEIVER_MODE_REG);
556 eth16i_initialize(dev, 1); /* Initialize rest of the chip's registers */
558 /* Now let's same some energy by shutting down the chip ;) */
559 BITCLR(ioaddr + CONFIG_REG_1, POWERUP);
561 /* Initialize the device structure */
562 dev->netdev_ops = ð16i_netdev_ops;
563 dev->watchdog_timeo = TX_TIMEOUT;
564 spin_lock_init(&lp->lock);
566 retval = register_netdev(dev);
571 free_irq(dev->irq, dev);
573 release_region(ioaddr, ETH16I_IO_EXTENT);
578 static void eth16i_initialize(struct net_device *dev, int boot)
580 int ioaddr = dev->base_addr;
582 unsigned char node_byte = 0;
584 /* Setup station address */
585 eth16i_select_regbank(NODE_ID_RB, ioaddr);
586 for(i = 0 ; i < 3 ; i++) {
587 unsigned short node_val = eth16i_read_eeprom(ioaddr, E_NODEID_0 + i);
588 ((unsigned short *)dev->dev_addr)[i] = ntohs(node_val);
591 for(i = 0; i < 6; i++) {
592 outb( ((unsigned char *)dev->dev_addr)[i], ioaddr + NODE_ID_0 + i);
594 printk("%02x", inb(ioaddr + NODE_ID_0 + i));
600 /* Now we will set multicast addresses to accept none */
601 eth16i_select_regbank(HASH_TABLE_RB, ioaddr);
602 for(i = 0; i < 8; i++)
603 outb(0x00, ioaddr + HASH_TABLE_0 + i);
606 Now let's disable the transmitter and receiver, set the buffer ram
607 cycle time, bus width and buffer data path width. Also we shall
608 set transmit buffer size and total buffer size.
611 eth16i_select_regbank(2, ioaddr);
614 node_w = eth16i_read_eeprom(ioaddr, E_PRODUCT_CFG);
616 if( (node_w & 0xFF00) == 0x0800)
617 node_byte |= BUFFER_WIDTH_8;
619 node_byte |= SRAM_BS1;
621 if( (node_w & 0x00FF) == 64)
622 node_byte |= SRAM_BS0;
624 node_byte |= DLC_EN | SRAM_CYCLE_TIME_100NS | (ETH16I_TX_BUF_SIZE << 2);
626 outb(node_byte, ioaddr + CONFIG_REG_0);
628 /* We shall halt the transmitting, if 16 collisions are detected */
629 outb(HALT_ON_16, ioaddr + COL_16_REG);
632 /* if_port already set by init_module() */
634 dev->if_port = (dev->mem_start < E_PORT_FROM_EPROM) ?
635 dev->mem_start : E_PORT_FROM_EPROM;
638 /* Set interface port type */
640 static const char * const porttype[] = {
641 "BNC", "DIX", "TP", "AUTO", "FROM_EPROM"
647 case E_PORT_FROM_EPROM:
648 dev->if_port = eth16i_read_eeprom(ioaddr, E_PORT_SELECT);
652 dev->if_port = eth16i_probe_port(ioaddr);
661 printk(" %s interface.\n", porttype[dev->if_port]);
663 eth16i_set_port(ioaddr, dev->if_port);
666 /* Set Receive Mode to normal operation */
667 outb(MODE_2, ioaddr + RECEIVE_MODE_REG);
670 static int eth16i_probe_port(int ioaddr)
674 unsigned char dummy_packet[64];
676 /* Powerup the chip */
677 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
679 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
681 eth16i_select_regbank(NODE_ID_RB, ioaddr);
683 for(i = 0; i < 6; i++) {
684 dummy_packet[i] = inb(ioaddr + NODE_ID_0 + i);
685 dummy_packet[i+6] = inb(ioaddr + NODE_ID_0 + i);
688 dummy_packet[12] = 0x00;
689 dummy_packet[13] = 0x04;
690 memset(dummy_packet + 14, 0, sizeof(dummy_packet) - 14);
692 eth16i_select_regbank(2, ioaddr);
694 for(i = 0; i < 3; i++) {
695 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
696 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
697 eth16i_set_port(ioaddr, i);
700 printk(KERN_DEBUG "Set port number %d\n", i);
702 retcode = eth16i_send_probe_packet(ioaddr, dummy_packet, 64);
704 retcode = eth16i_receive_probe_packet(ioaddr);
707 printk(KERN_DEBUG "Eth16i interface port found at %d\n", i);
713 printk(KERN_DEBUG "TRANSMIT_DONE timeout when probing interface port\n");
717 if( eth16i_debug > 1)
718 printk(KERN_DEBUG "Using default port\n");
723 static void eth16i_set_port(int ioaddr, int porttype)
725 unsigned short temp = 0;
727 eth16i_select_regbank(TRANSCEIVER_MODE_RB, ioaddr);
728 outb(LOOPBACK_CONTROL, ioaddr + TRANSMIT_MODE_REG);
730 temp |= DIS_AUTO_PORT_SEL;
743 BITSET(ioaddr + TRANSMIT_MODE_REG, CONTROL_OUTPUT);
747 outb(temp, ioaddr + TRANSCEIVER_MODE_REG);
749 if(eth16i_debug > 1) {
750 printk(KERN_DEBUG "TRANSMIT_MODE_REG = %x\n", inb(ioaddr + TRANSMIT_MODE_REG));
751 printk(KERN_DEBUG "TRANSCEIVER_MODE_REG = %x\n",
752 inb(ioaddr+TRANSCEIVER_MODE_REG));
756 static int eth16i_send_probe_packet(int ioaddr, unsigned char *b, int l)
758 unsigned long starttime;
760 outb(0xff, ioaddr + TX_STATUS_REG);
762 outw(l, ioaddr + DATAPORT);
763 outsw(ioaddr + DATAPORT, (unsigned short *)b, (l + 1) >> 1);
766 outb(TX_START | 1, ioaddr + TRANSMIT_START_REG);
768 while( (inb(ioaddr + TX_STATUS_REG) & 0x80) == 0) {
769 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
777 static int eth16i_receive_probe_packet(int ioaddr)
779 unsigned long starttime;
783 while((inb(ioaddr + TX_STATUS_REG) & 0x20) == 0) {
784 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
787 printk(KERN_DEBUG "Timeout occurred waiting transmit packet received\n");
789 while((inb(ioaddr + RX_STATUS_REG) & 0x80) == 0) {
790 if( time_after(jiffies, starttime + TX_TIMEOUT)) {
792 printk(KERN_DEBUG "Timeout occurred waiting receive packet\n");
798 printk(KERN_DEBUG "RECEIVE_PACKET\n");
799 return 0; /* Found receive packet */
803 if(eth16i_debug > 1) {
804 printk(KERN_DEBUG "TRANSMIT_PACKET_RECEIVED %x\n", inb(ioaddr + TX_STATUS_REG));
805 printk(KERN_DEBUG "RX_STATUS_REG = %x\n", inb(ioaddr + RX_STATUS_REG));
808 return 0; /* Return success */
812 static int eth16i_set_irq(struct net_device* dev)
814 const int ioaddr = dev->base_addr;
815 const int irq = dev->irq;
818 if(ioaddr < 0x1000) {
819 while(eth16i_irqmap[i] && eth16i_irqmap[i] != irq)
822 if(i < NUM_OF_ISA_IRQS) {
823 u8 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
824 cbyte = (cbyte & 0x3F) | (i << 6);
825 outb(cbyte, ioaddr + JUMPERLESS_CONFIG);
830 printk(KERN_NOTICE "%s: EISA Interrupt cannot be set. Use EISA Configuration utility.\n", dev->name);
838 static int __init eth16i_get_irq(int ioaddr)
842 if( ioaddr < 0x1000) {
843 cbyte = inb(ioaddr + JUMPERLESS_CONFIG);
844 return eth16i_irqmap[((cbyte & 0xC0) >> 6)];
845 } else { /* Oh..the card is EISA so method getting IRQ different */
846 unsigned short index = 0;
847 cbyte = inb(ioaddr + EISA_IRQ_REG);
848 while( (cbyte & 0x01) == 0) {
852 return eth32i_irqmap[index];
856 static int __init eth16i_check_signature(int ioaddr)
859 unsigned char creg[4] = { 0 };
861 for(i = 0; i < 4 ; i++) {
863 creg[i] = inb(ioaddr + TRANSMIT_MODE_REG + i);
866 printk("eth16i: read signature byte %x at %x\n",
868 ioaddr + TRANSMIT_MODE_REG + i);
871 creg[0] &= 0x0F; /* Mask collision cnr */
872 creg[2] &= 0x7F; /* Mask DCLEN bit */
876 This was removed because the card was sometimes left to state
877 from which it couldn't be find anymore. If there is need
878 to more strict check still this have to be fixed.
880 if( ! ((creg[0] == 0x06) && (creg[1] == 0x41)) ) {
886 if( !((creg[2] == 0x36) && (creg[3] == 0xE0)) ) {
890 if( !((creg[2] == 0x40) && (creg[3] == 0x00)) )
894 if(eth16i_read_eeprom(ioaddr, E_NODEID_0) != 0)
897 if((eth16i_read_eeprom(ioaddr, E_NODEID_1) & 0xFF00) != 0x4B00)
903 static int eth16i_read_eeprom(int ioaddr, int offset)
907 eth16i_eeprom_cmd(ioaddr, EEPROM_READ | offset);
908 outb(CS_1, ioaddr + EEPROM_CTRL_REG);
909 data = eth16i_read_eeprom_word(ioaddr);
910 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
915 static int eth16i_read_eeprom_word(int ioaddr)
920 for(i = 16; i > 0; i--) {
921 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
923 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
926 ((inb(ioaddr + EEPROM_DATA_REG) & DI_1) ? 1 : 0);
934 static void eth16i_eeprom_cmd(int ioaddr, unsigned char command)
938 outb(CS_0 | SK_0, ioaddr + EEPROM_CTRL_REG);
939 outb(DI_0, ioaddr + EEPROM_DATA_REG);
940 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
941 outb(DI_1, ioaddr + EEPROM_DATA_REG);
942 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
944 for(i = 7; i >= 0; i--) {
945 short cmd = ( (command & (1 << i)) ? DI_1 : DI_0 );
946 outb(cmd, ioaddr + EEPROM_DATA_REG);
947 outb(CS_1 | SK_0, ioaddr + EEPROM_CTRL_REG);
949 outb(CS_1 | SK_1, ioaddr + EEPROM_CTRL_REG);
954 static int eth16i_open(struct net_device *dev)
956 struct eth16i_local *lp = netdev_priv(dev);
957 int ioaddr = dev->base_addr;
959 /* Powerup the chip */
960 outb(0xc0 | POWERUP, ioaddr + CONFIG_REG_1);
962 /* Initialize the chip */
963 eth16i_initialize(dev, 0);
965 /* Set the transmit buffer size */
966 lp->tx_buf_size = eth16i_tx_buf_map[ETH16I_TX_BUF_SIZE & 0x03];
969 printk(KERN_DEBUG "%s: transmit buffer size %d\n",
970 dev->name, lp->tx_buf_size);
972 /* Now enable Transmitter and Receiver sections */
973 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
975 /* Now switch to register bank 2, for run time operation */
976 eth16i_select_regbank(2, ioaddr);
978 lp->open_time = jiffies;
981 lp->tx_queue_len = 0;
983 /* Turn on interrupts*/
984 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
986 netif_start_queue(dev);
990 static int eth16i_close(struct net_device *dev)
992 struct eth16i_local *lp = netdev_priv(dev);
993 int ioaddr = dev->base_addr;
997 /* Turn off interrupts*/
998 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1000 netif_stop_queue(dev);
1004 /* Disable transmit and receive */
1005 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1007 /* Reset the chip */
1008 /* outb(0xff, ioaddr + RESET); */
1009 /* outw(0xffff, ioaddr + TX_STATUS_REG); */
1011 outb(0x00, ioaddr + CONFIG_REG_1);
1016 static void eth16i_timeout(struct net_device *dev)
1018 struct eth16i_local *lp = netdev_priv(dev);
1019 int ioaddr = dev->base_addr;
1021 If we get here, some higher level has decided that
1022 we are broken. There should really be a "kick me"
1023 function call instead.
1026 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1027 printk(KERN_WARNING "%s: transmit timed out with status %04x, %s ?\n",
1029 inw(ioaddr + TX_STATUS_REG), (inb(ioaddr + TX_STATUS_REG) & TX_DONE) ?
1030 "IRQ conflict" : "network cable problem");
1032 dev->trans_start = jiffies; /* prevent tx timeout */
1034 /* Let's dump all registers */
1035 if(eth16i_debug > 0) {
1036 printk(KERN_DEBUG "%s: timeout: %02x %02x %02x %02x %02x %02x %02x %02x.\n",
1037 dev->name, inb(ioaddr + 0),
1038 inb(ioaddr + 1), inb(ioaddr + 2),
1039 inb(ioaddr + 3), inb(ioaddr + 4),
1041 inb(ioaddr + 6), inb(ioaddr + 7));
1043 printk(KERN_DEBUG "%s: transmit start reg: %02x. collision reg %02x\n",
1044 dev->name, inb(ioaddr + TRANSMIT_START_REG),
1045 inb(ioaddr + COL_16_REG));
1046 printk(KERN_DEBUG "lp->tx_queue = %d\n", lp->tx_queue);
1047 printk(KERN_DEBUG "lp->tx_queue_len = %d\n", lp->tx_queue_len);
1048 printk(KERN_DEBUG "lp->tx_started = %d\n", lp->tx_started);
1050 dev->stats.tx_errors++;
1052 dev->trans_start = jiffies; /* prevent tx timeout */
1053 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1054 netif_wake_queue(dev);
1057 static netdev_tx_t eth16i_tx(struct sk_buff *skb, struct net_device *dev)
1059 struct eth16i_local *lp = netdev_priv(dev);
1060 int ioaddr = dev->base_addr;
1062 ushort length = skb->len;
1064 unsigned long flags;
1066 if (length < ETH_ZLEN) {
1067 if (skb_padto(skb, ETH_ZLEN))
1068 return NETDEV_TX_OK;
1073 netif_stop_queue(dev);
1075 /* Turn off TX interrupts */
1076 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1078 /* We would be better doing the disable_irq tricks the 3c509 does,
1079 that would make this suck a lot less */
1081 spin_lock_irqsave(&lp->lock, flags);
1083 if( (length + 2) > (lp->tx_buf_size - lp->tx_queue_len)) {
1084 if(eth16i_debug > 0)
1085 printk(KERN_WARNING "%s: Transmit buffer full.\n", dev->name);
1088 outw(length, ioaddr + DATAPORT);
1090 if( ioaddr < 0x1000 )
1091 outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1);
1093 unsigned char frag = length % 4;
1094 outsl(ioaddr + DATAPORT, buf, length >> 2);
1096 outsw(ioaddr + DATAPORT, (buf + (length & 0xFFFC)), 1);
1098 outsw(ioaddr + DATAPORT,
1099 (buf + (length & 0xFFFC) + 2), 1);
1102 lp->tx_buffered_packets++;
1103 lp->tx_buffered_bytes = length;
1105 lp->tx_queue_len += length + 2;
1107 lp->tx_buf_busy = 0;
1109 if(lp->tx_started == 0) {
1110 /* If the transmitter is idle..always trigger a transmit */
1111 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1113 lp->tx_queue_len = 0;
1115 netif_wake_queue(dev);
1117 else if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1118 /* There is still more room for one more packet in tx buffer */
1119 netif_wake_queue(dev);
1122 spin_unlock_irqrestore(&lp->lock, flags);
1124 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1125 /* Turn TX interrupts back on */
1126 /* outb(TX_INTR_DONE | TX_INTR_16_COL, ioaddr + TX_INTR_REG); */
1129 return NETDEV_TX_OK;
1132 static void eth16i_rx(struct net_device *dev)
1134 int ioaddr = dev->base_addr;
1135 int boguscount = MAX_RX_LOOP;
1137 /* Loop until all packets have been read */
1138 while( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) {
1140 /* Read status byte from receive buffer */
1141 ushort status = inw(ioaddr + DATAPORT);
1143 /* Get the size of the packet from receive buffer */
1144 ushort pkt_len = inw(ioaddr + DATAPORT);
1146 if(eth16i_debug > 4)
1147 printk(KERN_DEBUG "%s: Receiving packet mode %02x status %04x.\n",
1149 inb(ioaddr + RECEIVE_MODE_REG), status);
1151 if( !(status & PKT_GOOD) ) {
1152 dev->stats.rx_errors++;
1154 if( (pkt_len < ETH_ZLEN) || (pkt_len > ETH_FRAME_LEN) ) {
1155 dev->stats.rx_length_errors++;
1160 eth16i_skip_packet(dev);
1161 dev->stats.rx_dropped++;
1164 else { /* Ok so now we should have a good packet */
1165 struct sk_buff *skb;
1167 skb = dev_alloc_skb(pkt_len + 3);
1169 printk(KERN_WARNING "%s: Could'n allocate memory for packet (len %d)\n",
1170 dev->name, pkt_len);
1171 eth16i_skip_packet(dev);
1172 dev->stats.rx_dropped++;
1179 Now let's get the packet out of buffer.
1180 size is (pkt_len + 1) >> 1, cause we are now reading words
1181 and it have to be even aligned.
1185 insw(ioaddr + DATAPORT, skb_put(skb, pkt_len),
1186 (pkt_len + 1) >> 1);
1188 unsigned char *buf = skb_put(skb, pkt_len);
1189 unsigned char frag = pkt_len % 4;
1191 insl(ioaddr + DATAPORT, buf, pkt_len >> 2);
1194 unsigned short rest[2];
1195 rest[0] = inw( ioaddr + DATAPORT );
1197 rest[1] = inw( ioaddr + DATAPORT );
1199 memcpy(buf + (pkt_len & 0xfffc), (char *)rest, frag);
1203 skb->protocol=eth_type_trans(skb, dev);
1205 if( eth16i_debug > 5 ) {
1207 printk(KERN_DEBUG "%s: Received packet of length %d.\n",
1208 dev->name, pkt_len);
1209 for(i = 0; i < 14; i++)
1210 printk(KERN_DEBUG " %02x", skb->data[i]);
1211 printk(KERN_DEBUG ".\n");
1214 dev->stats.rx_packets++;
1215 dev->stats.rx_bytes += pkt_len;
1219 if(--boguscount <= 0)
1225 static irqreturn_t eth16i_interrupt(int irq, void *dev_id)
1227 struct net_device *dev = dev_id;
1228 struct eth16i_local *lp;
1229 int ioaddr = 0, status;
1232 ioaddr = dev->base_addr;
1233 lp = netdev_priv(dev);
1235 /* Turn off all interrupts from adapter */
1236 outw(ETH16I_INTR_OFF, ioaddr + TX_INTR_REG);
1238 /* eth16i_tx won't be called */
1239 spin_lock(&lp->lock);
1241 status = inw(ioaddr + TX_STATUS_REG); /* Get the status */
1242 outw(status, ioaddr + TX_STATUS_REG); /* Clear status bits */
1247 if(eth16i_debug > 3)
1248 printk(KERN_DEBUG "%s: Interrupt with status %04x.\n", dev->name, status);
1250 if( status & 0x7f00 ) {
1252 dev->stats.rx_errors++;
1254 if(status & (BUS_RD_ERR << 8) )
1255 printk(KERN_WARNING "%s: Bus read error.\n",dev->name);
1256 if(status & (SHORT_PKT_ERR << 8) ) dev->stats.rx_length_errors++;
1257 if(status & (ALIGN_ERR << 8) ) dev->stats.rx_frame_errors++;
1258 if(status & (CRC_ERR << 8) ) dev->stats.rx_crc_errors++;
1259 if(status & (RX_BUF_OVERFLOW << 8) ) dev->stats.rx_over_errors++;
1261 if( status & 0x001a) {
1263 dev->stats.tx_errors++;
1265 if(status & CR_LOST) dev->stats.tx_carrier_errors++;
1266 if(status & TX_JABBER_ERR) dev->stats.tx_window_errors++;
1269 if(status & COLLISION) {
1270 dev->stats.collisions +=
1271 ((inb(ioaddr+TRANSMIT_MODE_REG) & 0xF0) >> 4);
1274 if(status & COLLISIONS_16) {
1275 if(lp->col_16 < MAX_COL_16) {
1277 dev->stats.collisions++;
1278 /* Resume transmitting, skip failed packet */
1279 outb(0x02, ioaddr + COL_16_REG);
1282 printk(KERN_WARNING "%s: bailing out due to many consecutive 16-in-a-row collisions. Network cable problem?\n", dev->name);
1287 if( status & 0x00ff ) { /* Let's check the transmit status reg */
1289 if(status & TX_DONE) { /* The transmit has been done */
1290 dev->stats.tx_packets = lp->tx_buffered_packets;
1291 dev->stats.tx_bytes += lp->tx_buffered_bytes;
1294 if(lp->tx_queue) { /* Is there still packets ? */
1295 /* There was packet(s) so start transmitting and write also
1296 how many packets there is to be sended */
1297 outb(TX_START | lp->tx_queue, ioaddr + TRANSMIT_START_REG);
1299 lp->tx_queue_len = 0;
1305 netif_wake_queue(dev);
1309 if( ( status & 0x8000 ) ||
1310 ( (inb(ioaddr + RECEIVE_MODE_REG) & RX_BUFFER_EMPTY) == 0) ) {
1311 eth16i_rx(dev); /* We have packet in receive buffer */
1314 /* Turn interrupts back on */
1315 outw(ETH16I_INTR_ON, ioaddr + TX_INTR_REG);
1317 if(lp->tx_queue_len < lp->tx_buf_size - (ETH_FRAME_LEN + 2)) {
1318 /* There is still more room for one more packet in tx buffer */
1319 netif_wake_queue(dev);
1322 spin_unlock(&lp->lock);
1324 return IRQ_RETVAL(handled);
1327 static void eth16i_skip_packet(struct net_device *dev)
1329 int ioaddr = dev->base_addr;
1331 inw(ioaddr + DATAPORT);
1332 inw(ioaddr + DATAPORT);
1333 inw(ioaddr + DATAPORT);
1335 outb(SKIP_RX_PACKET, ioaddr + FILTER_SELF_RX_REG);
1336 while( inb( ioaddr + FILTER_SELF_RX_REG ) != 0);
1339 static void eth16i_reset(struct net_device *dev)
1341 struct eth16i_local *lp = netdev_priv(dev);
1342 int ioaddr = dev->base_addr;
1344 if(eth16i_debug > 1)
1345 printk(KERN_DEBUG "%s: Resetting device.\n", dev->name);
1347 BITSET(ioaddr + CONFIG_REG_0, DLC_EN);
1348 outw(0xffff, ioaddr + TX_STATUS_REG);
1349 eth16i_select_regbank(2, ioaddr);
1352 lp->tx_buf_busy = 0;
1354 lp->tx_queue_len = 0;
1355 BITCLR(ioaddr + CONFIG_REG_0, DLC_EN);
1358 static void eth16i_multicast(struct net_device *dev)
1360 int ioaddr = dev->base_addr;
1362 if (!netdev_mc_empty(dev) || dev->flags&(IFF_ALLMULTI|IFF_PROMISC))
1364 outb(3, ioaddr + RECEIVE_MODE_REG);
1366 outb(2, ioaddr + RECEIVE_MODE_REG);
1370 static void eth16i_select_regbank(unsigned char banknbr, int ioaddr)
1374 data = inb(ioaddr + CONFIG_REG_1);
1375 outb( ((data & 0xF3) | ( (banknbr & 0x03) << 2)), ioaddr + CONFIG_REG_1);
1380 static ushort eth16i_parse_mediatype(const char* s)
1383 return E_PORT_FROM_EPROM;
1385 if (!strncmp(s, "bnc", 3))
1387 else if (!strncmp(s, "tp", 2))
1389 else if (!strncmp(s, "dix", 3))
1391 else if (!strncmp(s, "auto", 4))
1394 return E_PORT_FROM_EPROM;
1397 #define MAX_ETH16I_CARDS 4 /* Max number of Eth16i cards per module */
1399 static struct net_device *dev_eth16i[MAX_ETH16I_CARDS];
1400 static int io[MAX_ETH16I_CARDS];
1402 static int irq[MAX_ETH16I_CARDS];
1404 static char* mediatype[MAX_ETH16I_CARDS];
1405 static int debug = -1;
1407 MODULE_AUTHOR("Mika Kuoppala <miku@iki.fi>");
1408 MODULE_DESCRIPTION("ICL EtherTeam 16i/32 driver");
1409 MODULE_LICENSE("GPL");
1412 module_param_array(io, int, NULL, 0);
1413 MODULE_PARM_DESC(io, "eth16i I/O base address(es)");
1416 module_param_array(irq, int, NULL, 0);
1417 MODULE_PARM_DESC(irq, "eth16i interrupt request number");
1420 module_param_array(mediatype, charp, NULL, 0);
1421 MODULE_PARM_DESC(mediatype, "eth16i media type of interface(s) (bnc,tp,dix,auto,eprom)");
1423 module_param(debug, int, 0);
1424 MODULE_PARM_DESC(debug, "eth16i debug level (0-6)");
1426 int __init init_module(void)
1428 int this_dev, found = 0;
1429 struct net_device *dev;
1431 for (this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1432 dev = alloc_etherdev(sizeof(struct eth16i_local));
1436 dev->base_addr = io[this_dev];
1439 eth16i_debug = debug;
1441 if(eth16i_debug > 1)
1442 printk(KERN_NOTICE "eth16i(%d): interface type %s\n", this_dev, mediatype[this_dev] ? mediatype[this_dev] : "none" );
1444 dev->if_port = eth16i_parse_mediatype(mediatype[this_dev]);
1446 if(io[this_dev] == 0) {
1447 if (this_dev != 0) { /* Only autoprobe 1st one */
1452 printk(KERN_NOTICE "eth16i.c: Presently autoprobing (not recommended) for a single card.\n");
1455 if (do_eth16i_probe(dev) == 0) {
1456 dev_eth16i[found++] = dev;
1459 printk(KERN_WARNING "eth16i.c No Eth16i card found (i/o = 0x%x).\n",
1469 void __exit cleanup_module(void)
1473 for(this_dev = 0; this_dev < MAX_ETH16I_CARDS; this_dev++) {
1474 struct net_device *dev = dev_eth16i[this_dev];
1476 if (netdev_priv(dev)) {
1477 unregister_netdev(dev);
1478 free_irq(dev->irq, dev);
1479 release_region(dev->base_addr, ETH16I_IO_EXTENT);